3D data conversion factors

This document gives the units values used by the various data quantities that show up in the 3d data structures that are used in many SPEDAS functions and procedures. These values are gleaned from various comments in various SPEDAS conv_units routines. The units refer to the units of the data tag for the 3d data structures returned by various particle load routines, for THEMIS ESA and SST, FAST ESA, WIND 3DP, STEREO IMPACT, MAVEN SWEA, STATIC, SWIA.

Units of data quantities are mostly undocumented in the code, but there are some comments in thm_convert_esa_units.pro, (and also in a FAST routine contour2d.pro). Here is an IDL case statement that summarizes.